.There is no longer an issue with bucket metadata when updating from RHCS 5.1 to a later version RADOS Gateway (RGW) as shipped with Red Hat Ceph Storage (RHCS) version 5.1 inadvertently contained logic related to not-yet-GA support for dynamic bucket-index resharding in multisite replication setups. This logic was intentionally removed from RHCS 5.2. A side effect of this history is that sites which have upgraded to RHCS 5.1 cannot upgrade to RHCS 5.2, since version 5.2's bucket metadata handling is not compatible with that of RHCS 5.1. This situation is now resolved with the upgrade to RHCS 5.3. As a result, RHCS 5.3 is able to operate on buckets created in all prior versions, including 5.1.